amazon-sp-api-node8/lib/TimeoutManager.js

Amazon Selling Partner API client for Node version 8x

const CustomError = require("./CustomError");

class TimeoutManager {
  constructor({ response, idle, deadline } = {}) {
    this._req = null;
    this._response = response;
    this._idle = idle;
    this._deadline = deadline;
    this._timeouts = {};

    this._setTimeout = {
      response: () => {
        return setTimeout(() => {
          this._req.destroy(
            new CustomError({
              code: "API_RESPONSE_TIMEOUT",
              message: `No data received within specified response timeout (${this._response}ms).`,
              timeout: this._response,
            })
          );
        }, this._response);
      },
      deadline: () => {
        return setTimeout(() => {
          this._req.destroy(
            new CustomError({
              code: "API_DEADLINE_TIMEOUT",
              message: `Response was not completely received within specified deadline timeout (${this._deadline}ms).`,
              timeout: this._deadline,
            })
          );
        }, this._deadline);
      },
      idle: () => {
        return setTimeout(() => {
          this._req.destroy(
            new CustomError({
              code: "API_IDLE_TIMEOUT",
              message: `Next chunk of response was not received within specified idle timeout (${this._idle}ms).`,
              timeout: this._idle,
            })
          );
        }, this._idle);
      }
    };
  }

  init(req) {
    this._req = req;
    if (this._response) this._timeouts.response = this._setTimeout.response();
    if (this._deadline) this._timeouts.deadline = this._setTimeout.deadline();
  }

  onResData() {
    if (this._timeouts.response) {
      clearTimeout(this._timeouts.response);
      delete this._timeouts.response;
    }
    if (this._timeouts.idle) clearTimeout(this._timeouts.idle);
    if (this._idle) this._timeouts.idle = this._setTimeout.idle();
  }

  onResEnd() {
    if (this._timeouts.idle) clearTimeout(this._timeouts.idle);
    if (this._timeouts.deadline) clearTimeout(this._timeouts.deadline);
  }
}

module.exports = TimeoutManager;